Awireless carrier offers the following plans that a person is considering.
the family plan: $100 monthly fee, unlimited talk and text on up to 5 lines, and data charges of $45 for each device for up to 2 gb of data per device.
the mobile share plan: $130 monthly fee for up to 10 devices, unlimited talk and text for all the lines, and data charges of $35 for each device up to a shared total of 10 gb of data
assuming they stay under their data limit, find the number of devices that would make the two plans equal in cost.

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.